Answer 1:
Interesting issue, hopefully we can guide you
in the right direction. Long story short, its most
likely the fact that the alcohol in the
mouthwash is destroying the surface tension of
your bubble. Try finding a mouthwash that
doesn't use alcohol, but there could be something
in one of these other mouthwashes that might do
the same thing. You do need to add something like
soap though for it to work.
For more detail, the first thing to understand
is what a bubble is, and why you see them
most commonly using soap.
A soap bubble works because soap is a molecule
with a part that attracts fat (like butter/grease)
and a part that attracts water. Water doesn't
really like fat, but in the presence of soap, both
fat and water are attracted to the soap, and you
end up forming what is known as an emulsion.
A soap bubble works because without adding a
lot of extra grease, the fatty ends of the soap
will attract to each other, and form known as a
"lipid bilayer", where air gets trapped in
a thing sphere of water-soap-water. There are
pictures of it on this website
here .
Hope that helps guide you in the right
direction!
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